The test_core will skip the test_cgcore_no_internal_process_constraint_on_threads test case if the 'cpu' controller missing in root's subtree_control. In fact we need to set the 'cpu' in subtree_control, then the testing is meaningful.
./test_core ... ok 4 # skip test_cgcore_no_internal_process_constraint_on_threads ... Signed-off-by: Alex Shi <alex....@linux.alibaba.com> Cc: Shuah Khan <sh...@kernel.org> Cc: Tejun Heo <t...@kernel.org> Cc: Roman Gushchin <g...@fb.com> Cc: Claudio Zumbo <claud...@fb.com> Cc: Claudio <claudiozu...@gmail.com> Cc: linux-kselft...@vger.kernel.org Cc: linux-kernel@vger.kernel.org --- tools/testing/selftests/cgroup/test_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/cgroup/test_core.c b/tools/testing/selftests/cgroup/test_core.c index b1a570d7c557..2ffc3e07d98d 100644 --- a/tools/testing/selftests/cgroup/test_core.c +++ b/tools/testing/selftests/cgroup/test_core.c @@ -198,7 +198,7 @@ static int test_cgcore_no_internal_process_constraint_on_threads(const char *roo char *parent = NULL, *child = NULL; if (cg_read_strstr(root, "cgroup.controllers", "cpu") || - cg_read_strstr(root, "cgroup.subtree_control", "cpu")) { + cg_write(root, "cgroup.subtree_control", "+cpu")) { ret = KSFT_SKIP; goto cleanup; } -- 2.19.1.856.g8858448bb